Merge PR #40094 into pacific

Merge PR #40094 into pacific

* refs/pull/40094/head:
	rgw/kms/vault - PendingReleaseNotes pointer
	rgw/kms/vault - s3tests for both old and new test logic.
	rgw/kms/vault - rework unit test logic for new transit logic.
	rgw/kms/vault - 0 terminate before rapidjson
	rgw/kms/vault - document configuration for new transit logic
	rgw/kms/vault - new transit logic - fix compat logic
	rgw/kms/vault - define attribute for new transit logic
	rgw/kms/vault - "compat" option
	rgw/kms/vault - encryption context - first part
	rgw/kms/vault - define attribute to store encryption context
	rgw/kms/vault - share get/set attr between rgw_crypt.cc and rgw_kms.cc
	rgw/kms/vault - relax configuration parsing for rgw_crypt_vault_secret_engine
	rgw/kms/vault - need libicu to make canonical json for encryption contexts.
	rgw/kms/kmip - document configuration for a new feature: kmip kms
	rgw/kms/kmip - rgw / kmip test integration.
	rgw/kms/kmip - rgw / kmip test integration.
	rgw/kms/kmip - rgw / kmip test integration.
	rgw/kms/kmip - correct documentation.
	rgw/kms/kmip - pykmip.py needs to make keys too.
	rgw/kms/kmip - pykmip.py should actually run pykmip.
	rgw/kms/kmip - python3 changes for testing.
	rgw/kms/kmip - string handling cleanup.
	teuthology/rgw: pykmip task
	kmip: first pass at implementation logic.
	kmip: configuration options.
	Including cmake build logic inside of libkmip.
	cmake glue to build libkmip.
	Added libkmip as a submodule.

Reviewed-by: Casey Bodley <cbodley@redhat.com>